ST72621L4M1(2002) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72621L4M1
(Rev.:2002)

LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, FLASH OR ROM MEMORY, LVD, WDG, 10-BIT ADC, 2 TIMERS, SCI, SPI

STMicroelectronics 

ST7262

15 KNOWN LIMITATIONS

15.1 UNEXPECTED RESET FETCH

If an interrupt request occurs while a "POP CC" in-

struction is executed, the interrupt controller does

not recognise the source of the interrupt and, by

default, passes the RESET vector address to the

CPU.

Workaround

To solve this issue, a "POP CC" instruction must

always be preceded by a "SIM" instruction.

15.2 HALT MODE POWER CONSUMPTION

WITH ADC ON

If the A/D converter is being used when Halt mode

is entered, the power consumption in Halt Mode

may exceed the maximum specified in the datash-

eet.

Workaround

Switch off the ADC by software (ADON=0) before

executing a HALT instruction.

131/133

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